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Post Info TOPIC: Asteroid 2009 HD
Blobrana


L

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RE: Asteroid 2009 HD
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Orbital Elements at Epoch 2454941.5 (2009-Apr-20.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
Element Value Uncertainty (1-sigma) Units
e .5551688533774805 0.0031456
a 2.423736001103288 0.017894 AU
q 1.078153264481056 0.00033553 AU
i 12.39336001921922 0.045992 deg
node 35.03287374025098 0.0018272 deg
peri 172.365039982992 0.010988 deg
M .3375808047581697 0.0073111 deg
tp 2454940.207586038694
(2009-Apr-18.70758604)		 0.013725 JED
period 1378.244910588033
3.77		 15.263
0.04179		 d
yr
n .2612017626434801 0.0028926 deg/d
Q 3.76931873772552 0.027828 AU
 Orbit Determination Parameters
# obs. used (total) 69
data-arc span 6 days
first obs. used 2009-04-17
last obs. used 2009-04-23
planetary ephem. DE405
SB-pert. ephem. SB405-CPV-2
quality code 8
fit RMS .47711
data source ORB
producer Otto Matic
solution date 2009-Apr-24 00:50:13

Additional Information
Earth MOID = .0748715 AU
T_jup = 3.256
Source

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Blobrana


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The 77 - 170 metre wide asteroid 2009 HD will make a close pass (28.9 Lunar Distances, 0.0742 AU), travelling at 9.22km/s, to the Earth-Moon system on the 24th April 2009.

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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).

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Blobrana


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Orbital elements:
2009 HD                                                  Earth MOID = 0.0738 AU
Epoch 2009 June 18.0 TT = JDT 2455000.5                 MPC
M  16.34800              (2000.0)            P               Q
n   0.27116891     Peri.  172.39513     -0.88588041     +0.44767919
a   2.3639745      Node    35.03093     -0.43601038     -0.71388758
e   0.5443970      Incl.   12.23552     -0.15846404     -0.53846808
P   3.63           H   22.8           G   0.15           U   8

MPEC 2009 - H06

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